Electrotype-block



(No Model.)

P. GLEESON;

ELEG'TROTYPE BLOCK.

N0. 316,453. Patented Apr. 28, 1885.

UNITED STATES PATENT Cri ics.

PATRICK GLEESON, OF CHICAGO, ILLINOIS.

ELECTROTYPE-BL OC K.

SPECIFICATION forming part of Letters Patent 1\To.316,453, dated April28, 1885.

Application filed February 1-2, 188a. (No model.)

To call whom, it may concern.-

Be it known that I, PATRICK GLEEsoN, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Electrotype andStereotype Blocks, which are fully set forth in the followingspecification, reference being had to the accompanying drawings, forminga part hereof, and in which- Figure 1 represents one of my improvedblocks for mounting electrotype or stereotype plates in perspective, andin which the lower half of the metal plate or electrotype is brokenaway, also about one'half of each of the removable side clamps areremoved so as to show the construction of the block and parts beneathand behind them. Fig. 2 is a crosssection of Fig. 1 on the plane as :r.Fig. 3 is an interior view of one of the clamping-plates 6. providedwith pins j instead of tongues f. Fig. 4 shows the construction of theedges of the plate a and clamp 6, with its claw d and pin j in place ofgroove f.

Like letters of reference indicate like parts.

In the drawings, (t represents an electrotype-plate lying upon a block,b, and the hindin h.

'Ihe edges of the plate a are beveled inward toward the top from thelower edges, so as to fit under the inturned or hooked edges d of theclamps c c. Said clamps c 0 form a frame around the block b and bindersh, of which the two upper and contiguous plates or sides, 0, may bepermanently secured to the block b, and the lower ones, 6, are made soas to be removable, and are provided with one or more tongues f upontheir inner sides, which may run along their entire length parallel withthe base and fit into grooves 9, out in the sides of the binders orblock I). Said block b is preferably bound with metal plates h, eitherpermanently secured or made so as to be removable, and provided withgrooves g. Said parts are so made that the hooks (I will be slightlybelow the printing-surface of the plate a, and so that said hooks clwill press firmly on all the edges of the plate a when the form islocked in the chase.

In place of the tongue f and groove g, pins j, fixed to the plates o c,and fitting into ened to the block or binders; or any equivalent devicemay be used which will hold the plates or frame 0 e securely to thebinders h or block b, so that they cannot work upward whenlocked in thechase, and so as to cause said plates 0 c to assume their proper placeautomatically as the form is locked. When, therefore, it is desired toreplace or readjust the plate a in the form, it is only necessary tounlock the form sufficiently so that the edges or claws (I may be thrownoutward far enough to release the edges of the plate a, which may thenbe lifted from the block and readj ust-ed or replaced by another, whichmay then again be securely locked into its place without any othertrouble than simply locking the form. This locking of the form willcause the clamps o e to assume their former place without fail,especially when constructed as here shown. The lower edges of the clamps0 e are here shown to rest on the bedplate. Such construction ispreferable with a tongue and groove; but any equivalent device whichwill permit the claws d to open and close into their desired positionauto matically by locking the form, and thereby se- .curely hold theplate a, will answer the purpose of my invention.

Obviously, all four of the claws d and binders h may be made removable,and in either of the cases above mentioned the object of my inventionwill have been accomplished-- namely, the construction of mechanism tosecure an electrotype or stereotype plate upon a block.

What I claim is- 1. The electrotype or stereotype plate a and block b,of about equal area whereof the edges of the plate a are beveled upwardand inward, as shown, and hooks d, formed of the upper edges of theplates 0, and removable plates 6, fitting upon said beveled edges of theplate a and provided with mechanism, substantially as described, whichwill automatically bring the hooks (1 into their proper position by theaction of the locking mechanisrn of a form in a chase, substantially asand with tongues f, fitting into grooves 9, subspecified. stantially asspecified.

2. An, eleotrotype and stereotype plate a with upward and inwardlybeveled edges, and PATRICK GLEESON' 5 block I), provided with binders h,having Witnesses:

grooves g, and clamps c e, having claws d, fit- GEORGE A. PooLn, tingupon said beveled edges of the plate a, JOHN H. DYMoNp.

